SwimTemperature logoSwimTemperature
Open live map

Compare Lake Water Temperatures

Choose two or more lakes and see today's water temperature alongside the next seven days, so you can pick the warmest swim this week. Covering 525 lakes, lochs and reservoirs worldwide.

Compare lake temperatures

Pick up to 4 lakes to compare today's water temperature and the next seven days.

Warmest today
Lake Van · 20.8°C
Lake SevanLake Van
LakeTodaySwimming conditionsNext 7 days
Lake SevanArmenia18.8°Cmild3/2mm fullsuitAt 18.8°C a 3/2mm fullsuit is the standard wetsuit for surfing and watersports.Loading forecast…
Lake VanTurkey20.8°CwarmShorty 2mmAt 20.8°C a 2mm shorty keeps surfers warm; lap swimmers can usually skip the neoprene.Loading forecast…

Water temperatures are modelled from long-term monthly averages for each lake and refined daily with forecast air temperature, so the seven-day column shows the expected trend rather than a measured buoy reading.

Popular lake comparisons

Ready-made comparisons by country

Each page answers one question: which of the two lakes is warmer today, and when each is best to swim.

Looking at the coast instead? Compare beaches on the sea temperature comparison tool or browse all lake water temperatures.

Explore every sea temperature page

Jump straight to a country, coastal region, city, seasonal ranking or comparison.

Sea temperature by country

United StatesUnited KingdomAustraliaItalySpainFranceGreeceMexicoPortugalNew ZealandCroatiaCanadaIrelandThailandIndonesiaPhilippinesBrazilSwedenPolandDenmarkNorwayTurkeyNetherlandsGermanyBulgariaJapanCyprusEgyptIndiaSouth AfricaDominican RepublicRomaniaAll destinations →

Coastal region hubs

New South WalesSardiniaAlgarveCornwallAquitaineWestern AustraliaSicilyNorth IslandTuscanyVictoriaIstriaBaliLanguedocLiguriaPacific CoastDevonBrittanySilver CoastCosta del SolSouth IslandApuliaBritish ColumbiaNova ScotiaQuintana Roo

Water temperature today by city

LondonManchesterBirminghamEdinburghGlasgowBelfastCardiffBristolLiverpoolNewcastleLeedsDublinCorkGalwayParisLyonToulouseBordeauxNiceMarseille

Warmest sea in September

EuropeNorth AmericaSouth AmericaAsiaAfricaOceaniaUnited StatesUnited KingdomAustraliaItalySpainFranceGreeceMexicoPortugalNew ZealandCroatiaCanadaIrelandThailandWarmest right now →

Warmest sea month by month (Europe)

JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember

Coldest sea this month

EuropeNorth AmericaSouth AmericaAsiaAfricaOceaniaUnited StatesUnited KingdomAustraliaItalySpainFrance

Swimming guides

The best time to swim in the MediterraneanWhat sea temperature is safe to swim in?Swimming with kids: the best European beachesHow sea-surface temperature data actually worksWhat sea temperature is good for snorkelling?The best time to swim in SpainThe best time to swim in GreeceThe best time to swim in CroatiaThe best time to swim in FloridaThe best time to swim in CaliforniaThe best time to swim in AustraliaA beginner's guide to cold-water swimmingWarmest European beaches in OctoberFamily beach safety tips for every swimmerWetsuit guide: what to wear by water temperatureThe best time to swim in the CaribbeanThe best time to swim in MexicoThe best time to swim in ThailandThe best time to swim in PortugalThe best time to swim in TurkeyThe best time to swim in EgyptThe best time to swim in FranceThe best time to swim in ItalyBest beaches for snorkelling around the worldBest beaches for surfing by water temperatureHow to survive a rip currentJellyfish and marine life safety for swimmersHow to read a water temperature forecastLake Michigan water temperature: what to expectBest lakes to swim in the United StatesGreat Lakes swimming guideThe best time to swim in HawaiiThe best time to swim in the MaldivesThe best time to swim in Bali

Popular beach comparisons

Cala Estreta vs Platja d'AroCala Estreta vs Cala Sa TunaCala Pola vs Platja de LloretPlatja de Sant Pol vs Platja GranCala Montjoi vs Platja de PalsCala Pola vs Platja de Sant PolCala Estreta vs Platja de PalsAiguablava vs Cala EstretaCambrils Playa vs Platja de la PinedaPlatja de la Pineda vs Platja LlargaPlatja del Miracle vs Salou LevantePlaya del Carabassí vs Playa del PostiguetPlaya de San Juan vs Playa del CarabassíPlaya de la Fossa vs Playa de LevantePlaya de la Fossa vs Playa de PonienteCala Finestrat vs Playa del AlbirCala el Portet vs Playa de la FossaCala del Moraig vs Playa del ArenalCompare any two beaches →